Dumping view hierarchy before swiping to Overview

Bug: 156044202
Change-Id: I21a11a7a55103cffbc05ddeeb93ecc4f6f4063e7
diff --git a/tests/tapl/com/android/launcher3/tapl/Background.java b/tests/tapl/com/android/launcher3/tapl/Background.java
index 94ab780..ce94a3e 100644
--- a/tests/tapl/com/android/launcher3/tapl/Background.java
+++ b/tests/tapl/com/android/launcher3/tapl/Background.java
@@ -86,6 +86,11 @@
                         zeroButtonToOverviewGestureStartsInLauncher()
                                 ? LauncherInstrumentation.GestureScope.INSIDE_TO_OUTSIDE
                                 : LauncherInstrumentation.GestureScope.OUTSIDE;
+
+                // b/156044202
+                mLauncher.log("Hierarchy before swiping up to overview:");
+                mLauncher.dumpViewHierarchy();
+
                 mLauncher.sendPointer(
                         downTime, downTime, MotionEvent.ACTION_DOWN, start, gestureScope);
                 mLauncher.executeAndWaitForEvent(